WINNEBAGO — The Corn Plus ethanol plant in the south-central Minnesota city of Winnebago has agreed to pay a $25,000 penalty and take steps to reduce its air pollution and noise levels.

The corrective actions announced by the Minnesota Pollution Control Agency on Wednesday mark the latest step by officials to bring the plant into compliance with environmental regulations.

Corn Plus has paid about $660,000 in state and federal penalties for air and water quality violations and agreed to environmental improvements costing nearly $700,000 since 2009.

Corn Plus has an application pending with the MPCA for renewal of its environmental permits. Under its latest agreement with the agency, the company must submit more information for that application to move forward.